[Serusers] invites timeout after period of time

[Harold Workman]

hi,

When I load X-Lite behind a Single Mapped Port Symmetric NAT Firewall and
make a call to it, the X-Lite rings and I can hear voice in both directions.
The problem is when I leave the X-Lite sitting idle  for over 1 minute, the
inbound calls to client start to time out. Outbound calls from client work
no problem. Im not receiving anything on the X-Lite debugs, and when i debug
the SER, I see repeatedly sending Invites with no response.  Below is the
debug...64.72.107.2 is my Gateway, .4 is my SER, and .1 is my firewall NAT
address where my client X-Lite sits behind.    If i close the X-Lite and
open it back up, I am able to make calls to it again until I leave it sit
idle...Any ideas?  Could something be wrong with my nathelper?



Failed Attempt...

U 64.72.107.2:55580 -> 64.72.107.4:5060
INVITE sip:7133154693 at 64.72.107.4;user=phone;phone-context=n   ational
SIP/2.0..Via: SIP/2.0/UDP  64.72.107.2:5060..From: "   2814497314"
<sip:2814497314 at 64.72.107.2>..To: <sip:713315469
3 at 64.72.107.4;user=phone;phone-context=national>..Date: Mon,    24 May 2004
17:00:37 GMT..Call-ID: B67CA151-ACDA11D8-A5E08B
34-F8DB44FC at 64.72.107.2..Cisco-Guid: 3061621073-2899972568-2
782825268-4175119612..User-Agent: Cisco VoIP Gateway/ IOS 12   .x/ SIP
enabled..CSeq: 101 INVITE..Max-Forwards: 6..Timestam   p:
1085418037..Contact: <sip:2814497314 at 64.72.107.2:5060;use
r=phone>..Expires: 180..Content-Type: application/sdp..Conte   nt-Length:
132....v=0..o=CiscoSystemsSIP-GW-UserAgent 6230 2   341 IN IP4
64.72.107.2..s=SIP Call..c=IN IP4 64.72.107.2..t=   0 0..m=audio 20478
RTP/AVP 8..
#
U 64.72.107.4:5060 -> 64.72.107.2:5060
SIP/2.0 100 trying -- your call is important to us..Via: SIP   /2.0/UDP
64.72.107.2:5060..From: "2814497314" <sip:28144973   14 at 64.72.107.2>..To:
<sip:7133154693 at 64.72.107.4;user=phone;   phone-context=national>..Call-ID:
B67CA151-ACDA11D8-A5E08B34   -F8DB44FC at 64.72.107.2..CSeq: 101
INVITE..Server: Sip EXpress    router (0.8.12-tcp_nonb
(i386/linux))..Content-Length: 0..W   arning: 392 64.72.107.4:5060 "Noisy
feedback tells:  pid=159   6 req_src_ip=64.72.107.2 req_src_port=55580
in_uri=sip:71331   54693 at 64.72.107.4;user=phone;phone-context=national
out_uri=   sip:7133154693 at 64.72.107.1:55246 via_cnt==1"....
#
U 64.72.107.4:5060 -> 64.72.107.1:55246
INVITE sip:7133154693 at 64.72.107.1:55246 SIP/2.0..Via: SIP/2.   0/UDP
64.72.107.4;branch=z9hG4bKeb02.9f521926.0..Via: SIP/2.   0/UDP
64.72.107.2:5060..From: "2814497314" <sip:2814497314@   64.72.107.2>..To:
<sip:7133154693 at 64.72.107.4;user=phone;pho   ne-context=national>..Date:
Mon, 24 May 2004 17:00:37 GMT..C   all-ID:
B67CA151-ACDA11D8-A5E08B34-F8DB44FC at 64.72.107.2..Cis   co-Guid:
3061621073-2899972568-2782825268-4175119612..User-A   gent: Cisco VoIP
Gateway/ IOS 12.x/ SIP enabled..CSeq: 101 I   NVITE..Max-Forwards:
5..Timestamp: 1085418037..Contact: <sip
:2814497314 at 64.72.107.2:5060;user=phone>..Expires: 180..Cont   ent-Type:
application/sdp..Content-Length: 132..P-hint: USRL
OC....v=0..o=CiscoSystemsSIP-GW-UserAgent 6230 2341 IN IP4 6
4.72.107.2..s=SIP Call..c=IN IP4 64.72.107.2..t=0 0..m=audio    20478
RTP/AVP 8..
#
U 64.72.107.4:5060 -> 64.72.107.1:55246
INVITE sip:7133154693 at 64.72.107.1:55246 SIP/2.0..Via: SIP/2.   0/UDP
64.72.107.4;branch=z9hG4bKeb02.9f521926.0..Via: SIP/2.   0/UDP
64.72.107.2:5060..From: "2814497314" <sip:2814497314@   64.72.107.2>..To:
<sip:7133154693 at 64.72.107.4;user=phone;pho   ne-context=national>..Date:
Mon, 24 May 2004 17:00:37 GMT..C   all-ID:
B67CA151-ACDA11D8-A5E08B34-F8DB44FC at 64.72.107.2..Cis   co-Guid:
3061621073-2899972568-2782825268-4175119612..User-A   gent: Cisco VoIP
Gateway/ IOS 12.x/ SIP enabled..CSeq: 101 I   NVITE..Max-Forwards:
5..Timestamp: 1085418037..Contact: <sip
:2814497314 at 64.72.107.2:5060;user=phone>..Expires: 180..Cont   ent-Type:
application/sdp..Content-Length: 132..P-hint: USRL
OC....v=0..o=CiscoSystemsSIP-GW-UserAgent 6230 2341 IN IP4 6
4.72.107.2..s=SIP Call..c=IN IP4 64.72.107.2..t=0 0..m=audio    20478
RTP/AVP 8..
#
U 64.72.107.4:5060 -> 64.72.107.1:55246
INVITE sip:7133154693 at 64.72.107.1:55246 SIP/2.0..Via: SIP/2.   0/UDP
64.72.107.4;branch=z9hG4bKeb02.9f521926.0..Via: SIP/2.   0/UDP
64.72.107.2:5060..From: "2814497314" <sip:2814497314@   64.72.107.2>..To:
<sip:7133154693 at 64.72.107.4;user=phone;pho   ne-context=national>..Date:
Mon, 24 May 2004 17:00:37 GMT..C   all-ID:
B67CA151-ACDA11D8-A5E08B34-F8DB44FC at 64.72.107.2..Cis   co-Guid:
3061621073-2899972568-2782825268-4175119612..User-A   gent: Cisco VoIP
Gateway/ IOS 12.x/ SIP enabled..CSeq: 101 I   NVITE..Max-Forwards:
5..Timestamp: 1085418037..Contact: <sip
:2814497314 at 64.72.107.2:5060;user=phone>..Expires: 180..Cont   ent-Type:
application/sdp..Content-Length: 132..P-hint: USRL
OC....v=0..o=CiscoSystemsSIP-GW-UserAgent 6230 2341 IN IP4 6
4.72.107.2..s=SIP Call..c=IN IP4 64.72.107.2..t=0 0..m=audio    20478
RTP/AVP 8..







-----------------------
Harold Workman
CCNA, CCNP
Cytel Communications
hworkman at cytelcom.com
Ph. 281-449-4000 x3098